body {
    font-family: Helvetica, 'Hiragino Sans GB', 'Microsoft Yahei', '微软雅黑', Arial, sans-serif;
}


/* Header */

header {
    height: 200px;
    background: #f1f1f1;
    text-align: center;
    padding: 10px 0px;
}

header.h1 {
    /*font-family:*/
}


/* Content */

div.content {
    padding: 15px 0px;
}

div#editor {
    height: 560px;
}

pre#md {
    border-radius: 0px;
}